$664.38
Restores smooth engine operation; built for heavy-duty service.
GM
Duramax
11-16
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Precision machined for reliability in modified engines.
High-strength construction; eliminates harmful harmonics.
Thread-In Cap; Black Anodized Finish; Billet Aluminum Construction; Built-in O-ring Seal; Direct replacement for factory cap; Increases underhood aesthetics.
Increases valve seat pressure; prevents float at high boost.
Subtotal: $287.63
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